Protect None value in setup module
Fix a typo in the docs.
Well, a little more readability.
Fixed module name in examples section

Examples showed that modules name is rhnreq_ks, when it actually is rhn_register.
Merge pull request #3189 from E-M/patch-1

Fixed module rhn_register name in examples section
Merge pull request #3179 from ralphbean/docs-typofix

Fix a typo in the docs.
Merge pull request #3175 from jpmens/setup9

Protect None value in setup module (ansible 1.2)
Fixing documentation error